Flush valve



Patented Oct. 8,' 1935 UNITED STATES PATENT ori-ICE FLUSH VALVE William E. Sloan, Chicago, Ill.

'Appneeuen neeember s1, 1929, serial Ne. 417,641

' 9 cleime. (01.-137-93) 'I'his invention relates to flush valves and has for its object to provide a new and improved device of this description. 4

The invention has as a further object to provide a flush valve with a by pass provided with means for preventing foreign material from lodging therein. y f The invention has as a further object to provide a ilush valve with an auxiliary valve and means for insuring the properseatingand operation of the auxiliary valve. l

The invention has as a further object to provide a seat for the main valve which is easily reversible and renewable. i

The invention has further objects which are more particularly pointed out in the accompanyingvdescription.

Referring now to the drawing-Fig. 1 is a sec- A tional viewthrough one form of valve embodying the invention. K

Fig. 2 is an enlarged sectional showing the t seats for the auxiliary valve and inain valve.

Fig. 3 is a top view with parts broken away of the seat forfthe main valve. T v

Fig. 4 is a horizontal sectional view through that portion of the piston containing the passageways 28 and with the by-pass member'removed.

Like numerals refer to like parts throughoutl the several figures.

Referring now to the drawing, I have shown a ush valve having a casing consisting of the parts hand 2 connected together by a threaded connection. A gasket 3 is inserted between them to ton-4. The-seating member is provided with an inwardly projecting ledge l which surrounds the opening 8. This ledge is provided with an p` standing member 9 which surrounds the opening 8. A valve seat I9 is located between the upstanding member I and the upstanding wall 8.

This valve'seat is of non-metallic yielding mate`l rial such, for example, as rubber and is clamped vand held in position by the end of the piston 4.

This seat forms a seat for the auxiliaryvalve I I. and also acts a's a gasket to form a water tight.

joint between the piston 4 and the'seating member 9. The auxiliary `valve II has a downwardly Y projecting rim I2 which fits around the upstandin'g member 9. This auxiliary valve is held in its central position by the upstanding member 9 and the rim I2, both when theauxiliary valve is closed and when it is tiltedto its open position. The rim I2 and the upstanding-member 9 are so proportioned that when the auxiliary valve is closed it is supported upon the seat I0. When the auxiliary valve is open, the water in flowing therethrough 5` has an unobstructed passageway between the rim I2 and the upstanding member 9 and this results I3. An actuating member I4 engages this stem to4d move it laterally to tilt the auxiliary valve to open it.

The actuating member I4 is actuated by a handle I5 which has an engaging member I6 which l5 engages the enlarged end I'I of the actuating member. The actuating member is moved when the handle I5 is moved in any direction and when the handle is released, the retracting spring I8 moves the parts to their initial position. The 20 seating member 6V has a seating face I9 which when the valve is closed, engages the seat 20. 'This seat is made of non-metallic material such as rubber and ts intol a groove in the casing I. This seat fits the groove tightly so that it will remain 25 in position when the valve is being shipped. The seat is preferably made of soft rubber which vulcanized around a metal reinforcing member 2 I. The reinforcing ring is preferably notched around its inner edge, as shown at 22. Between the 30 notches are projections 29 which form the inner radius of thel metal ring and which serve as guides or wearing parts while the notches make possible a substantially continuous uniting of the rubber around the reinforcing ring. The seat has 35 its edges beveled or chamfered, as shownat 24. This aids in the quietk flow of the water through the main valve.

The seat can be easilyremoved by reaching down into the casing and taking hold of it. The 40 seat can be reversed by simply removing it and turning it over and replacing it in the groove. This construction provides a seat for the main valve which can be easily and quickly placed in position and which, when in position, provides an '45 effective seat which remains effective through a long period of use; The piston 4 divides the casf ing of the valve into two chambers 25 and 26.

A by pass connection is provided between the chamber 25 and the chamber 26. This by pass is 50 arranged so that after the valve has been opened, A water will pass from the chamber 25 to the chamber 26 so as Ato equalize the pressures between the chambers and cause the main valve to close.

y In the construction Ashown, the piston 4 is pro- 65 vided with a cham ber 21. This chamber 21 is connected by passageways 28 with the chamber 26. The chamber 21 is connected by a passageway 29 with the chamber 25. Projecting into the passageway 29 is a by pass member 3l which normally seats at the end of said passageway 29.

'The upper part of the piston 4 is large so as to ll the entire chamber but the lower part below the packing is simply a thin member of suiicient thickness tocontain the passageways 28. The space above the small passageway 29, which contains the by-pass member 3|, is open at both sides and communicates with the lower chamber 25. The connection between the lower chamber and upper chamber is then through the space containing the by-pass member, the passageway 29, 'the chamber 21 and the passageways 28. This by pass member at its seat is provided with a groove 32 so that when the' by pass member is seated at the end of the passage 29, this passage is closed except for the small amount of water that may pass through this groove 32. The by pass member 3| has connected therewith a stem 33, preferably integral therewith, the lower end of the stem resting on the top of or in proximity to the auxiliary valve II. i

A spring 34 surrounds the stem and engages the top of the auxiliary valve and the wall around the passageway 29. The lower endl of the stem 33 is preferably enlarged but is small enough to pass up through the passageway 29. The piston 4 is provided with a removable top plate 35 and cup washer 36 held in place by the fastening device 31. By removingthe top plate, and cup washer, the by pass member 3| may be easilyhr taken out of the piston for cleaning or replacement and when removed the stem 33 is pulled up through the passageway 29. An ad- Justable stop 31a is provided in the casing which limits theupward movement of the piston. This movement of the piston can, therefore,'be regulated by adjusting this stop. The stop is located in a threaded hole and is preferably made inaccessible and at the top of the threaded hole a screw 38 connected with the stop is provided. The valve casing is provided with aninlet 39 I and an outlet or discharge 40.

The use and operation of my invention are as follows When the parts are in the position shown in charge pipe 40. The pressure in chamber 25 on the piston lifts the piston so as to open the main valve and the piston lifts the piston so as to open the main valve and permit water to be discharged from the chamber 25 between the face I9 of the main valve and the seat 20. The tilting of `the auxiliary valve 9 causes it to lift the stem 33 and the by pass member 3| thus moving the by pass member from its seat and permitting a small quantity of water to rush directly from the supply by means of the passageway through the passage 29 and then out through the auxiliary valve to the discharge. -This rush of water washes -away any foreign matter that may be lodged around the by pass member. y

During this operation there is a shortperiod when the by pass member floats in the water and is free to be rotated about its axis and is rotated about its axis by the iiow of the water about it. This movement of the by pass member is an additional guard against the building up of deposits on its seat and in the groove 32. When the handle I5 is released, the spring 34 returns the auxiliary valve to its normal position so as to close the discharge from the chamber 21 and the by pass member 3| also moves toits seat determined amount, the `main valve is moved to its closed position. When the main valve is closed, the pressure in chamber 26 becomes equalized with the'pressure in chamber 25 by the pressure of water through the groove 32. During the closing movement, the ilush and reilll takes place. It will be noted that in this con-1 struction there are two openings through the piston, namely the. opening controlled by the auxiliary valve II andthe opening controlled by the by pass member 3| and that these two openings are positively open when the handle I5 is moved. f

It will further be seen that when these two openings ,are thus positively opened, the water rushes from chamber 25 throughthese openings and carries any foreign matter that may be in 'the by pass, out through the valve into the dischargepipe; vThis prevents the foreign matter from remaining in the valve in any position where it might have a detrimental action. It will be seen from, this construction that the by pass is cleaned at e-,very operation of the valve` and since the by pass member changes its position every time the valve is operated, that is, moves about its axis so as to cause the groove 32 to seat at a diiferent portion oi' the seatat the end of the passageway 29, it is impossible for deposits to buildup so as to interfere with the proper operation of the by pass.

The arrangement of the auxiliary valve also. prevents the unduewear of vits seat and insures its being properly centered both when open and when closed.

I claim:

1. A flush valve comprising a main valve, a piston which divides said main valve into two chambers, a by pass through the piston connecting the two chambers, a movable by pass member locatedin said connection and normally partially 'closing said connection, a small by pass around said by pass member which is always open, a stem connected with said-by pass member, an auxiliary valve mounted in said piston and normally envalve therein which divides the casing into two chambers, means for actuating said main valve,l a by pass extending through the main valve, and connecting -the-two chambers, a by pass member loosely mounted in'said by pass and normally partially closing the by pass, said by pass member having a non-sealing portion which permits water to flow when the by pass member is in its closed position, means for moving said by pass member when the valve is opened, the by pass member free to move about its axis in response to the flow of the water when the valve is open` so as to change the position of said non-sealing portion with relation to the seat of the by pass member.

3. A iiush valve comprising a casing, a main valve therein which divides the casing into two chambers, an auxiliary valve carried by said main valve, a by pass through said main valve connecting the two chambers, a by pass member loosely mounted in`said by pass, an auxiliary by pass extending past the by pass member when it is in its closed position, means for moving said bypass member when theauxiliary valve is moved and means for changing the position of said auxiliaryV by pass with relation to the seat of the by pass member when the by pass member is moved.

4. A nush valve comprising a casing, a main valve therein having a body portion, said main valve being provided with a seating member having an outer upstanding wall, said seating member having an opening therethrough with an upstanding rib extending thereabout, a resilient seat located between said rib and upstanding wall and engaged by the end of the body portion of said main valve and an auxiliary valve having a downwardly projecting portion which extends past said rib and engages said seat. y

5. A ush valve comprising a casing, a main valve therein, said main Valve being provided with a seating member having an outer upstanding wall, said seating member having an opening therethrough with an upstanding rib extending thereabout, a resilient seat located between said rib and upstanding wall and an auxiliary valve having a downwardly projecting portion which extends past said rib and engages said seat, the

seating member and the body portion of the main valve having a threaded connection, the seat for the auxiliary valve acting as a gasket between the seating portion and the body portion of the main valve to form a water tight joint between them. 5

6. A flush valve comprising a casing, a main valve in said casing, having a discharge passage- Way leading therefrom, a resilient seat for the main valve located in a groove surrounding said discharge opening and a ledge on the main valve which engages said seat when the valve is closed, said seatformed of rubber, a metal ring embedded in said rubber seat, said metal ring on its inner periphery being provided with alternating recesses and projections.

7. A .seat for ilush valves comprising a metal ring 'having on its inner periphery a-series of alternating recesses and projections and a body of resilient material in which said metal ring is embedded. v

8. A seat for ush valves comprising a metal ring having on its inner periphery a series of alternating recesses and projections and a body of resilient material in which said metal ring is embedded,l the inner edges of the periphery of 25 the body of resilient material being beveled.

9. A ilush valve comprising a casing, ,an inwardly projecting ledge connected with said casing, a main iiush valve member in said casing having a hollow central portion, a guiding device with which said hollow central portion is removably connected, a portion of said guiding device overlapping said ledge, a guiding part thereon which engages the inner tace of said ledge, a portion of said guiding device extending through 35 said ledge, an auxiliary valve located in said hollow central portion and a yielding seat for said auxiliary valve, said yielding seat being clamped between the end of the central portion and the said guiding part.

. 40 l WILLIAM E. SLOAN. 

